feat(modules): add server archetype

feat: WIP add "absolutesolver" system and "cyn" user *wink wink*
refactor: clean up some comments and remove empty lines

modules/home/common/ssh/default.nix

@@ -0,0 +1,41 @@
+{
+  lib,
+  pkgs,
+  inputs,
+  namespace,
+  config,
+  ...
+}: let
+  sshDir = "${config.home.homeDirectory}/.ssh";
+in {
+  home.packages = with pkgs; [
+    openssh
+  ];
+
+  programs.ssh = {
+    enable = true;
+    extraConfig = ''
+      AddKeysToAgent yes
+    '';
+
+    matchBlocks = {
+      "github.com" = {
+        identityFile = "${sshDir}/id_ed25519";
+        identitiesOnly = true;
+        user = "git";
+      };
+
+      "gitlab.com" = {
+        identityFile = "${sshDir}/id_ed25519";
+        identitiesOnly = true;
+        user = "git";
+      };
+
+      "bitbucket.org" = {
+        identityFile = "${sshDir}/id_ed25519";
+        identitiesOnly = true;
+        user = "git";
+      };
+    };
+  };
+}